Japan is preparing to shoot down a missile that North Korea has said it will launch between April 4-8.  N Korea claims the missile only contains a communications satellite, but many countries (including the US and Japan) fear they may be testing long range missile technology to possibly send a nuclear weapon out one day.  Japanese military authorities have already given the go ahead to shoot down any missiles that come near them.  The scary thing is "North Korea has warned that it will retaliate against any country attempting to intercept the satellite by restarting its nuclear development program."

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